org.apache.sshd.common.compression

Class CompressionZlib

java.lang.Object

org.apache.sshd.common.compression.CompressionZlib

All Implemented Interfaces:

Compression

Direct Known Subclasses:

CompressionDelayedZlib

public class CompressionZlib
extends Object
implements Compression

ZLib based Compression.

Author:

Apache MINA SSHD Project

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.sshd.common.compression.Compression

Compression.Type

Constructor Summary

Constructors

Constructor and Description
CompressionZlib() Create a new instance of a ZLib base compression

Method Summary

Modifier and Type	Method and Description
void	compress(Buffer buffer) Compress the given buffer in place.
void	init(Compression.Type type, int level) Initialize this object to either compress or uncompress data.
boolean	isDelayed() Delayed compression is an Open-SSH specific feature which informs both the client and server to not compress data before the session has been authenticated.
void	uncompress(Buffer from, Buffer to) Uncompress the data in a buffer into another buffer.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

CompressionZlib

public CompressionZlib()

Create a new instance of a ZLib base compression

Method Detail

isDelayed

public boolean isDelayed()

Description copied from interface: Compression

Delayed compression is an Open-SSH specific feature which informs both the client and server to not compress data before the session has been authenticated.

Specified by:

isDelayed in interface Compression

Returns:

if the compression is delayed after authentication or not

init

public void init(Compression.Type type,
                 int level)

Description copied from interface: Compression

Initialize this object to either compress or uncompress data. This method must be called prior to any calls to either compress or uncompress. Once the object has been initialized, only one of compress or uncompress methods can be called.

Specified by:

init in interface Compression

Parameters:

type - compression type

level - compression level

compress

public void compress(Buffer buffer)
              throws IOException

Description copied from interface: Compression

Compress the given buffer in place.

Specified by:

compress in interface Compression

Parameters:

buffer - the buffer containing the data to compress

Throws:

IOException - if an error occurs

uncompress

public void uncompress(Buffer from,
                       Buffer to)
                throws IOException

Description copied from interface: Compression

Uncompress the data in a buffer into another buffer.

Specified by:

uncompress in interface Compression

Parameters:

from - the buffer containing the data to uncompress

to - the buffer receiving the uncompressed data

Throws:

IOException - if an error occurs